I understand the situation when cheated dimension can be annoying specially when we are a bunch of designer doing a part of drawings.. and then, if someone was too lazy to revised drawing for 1/4" so he cheated dimensions.. however, I do have a solutions for that...
What about if we double click to change the dimension, and if we change the dimensions for another one, it breaks the dimension line (see example below) AND, there would be an option like for reveal constraints.. but for "reveal cheated dimensions" !! See again, printscreen. Cheated dimensions is really usefull for the time when you have drafting views and you want to represent a 10'-0" long portion of drawing, but you don't want the entire element drawn, only what's important (at both ends, for instance)..